Razor-stropping machine.



M. H. A.VRAM.

RAZOR STRUPPING MACHINE.

APTLIGATION IILBD JUNE Z1, 1909.

.Patented AMr. 1, MMU.

2 SHEETS-SHEET 1.

/ S www to z 1 to am e L M. H. AVRAM. RAZOR STROPPNG MACHINE.

APPLICATION FILED'JUNB 21, 1909.

Patented Mar. l, 1910.

2 SHEETS-SHBET 2.

nirrnn .KIES EN? FFIE.

Mots H. invasivi, or New Yoan, N. Y.

'Razon-STROPPING MACHINE.

Specification of Letters Patent.

Application led June 21, 1909.

Serial No. 503,492.

To all whom 'it muy concern:

Be 1t known that l, Mois H. AVRAM, a

citizen of the United States, and a resident` blades to be stropped may be readily end a crank 25 brought into proper operative engagement with a pair ot' stropping rollers and that the sharpened blades may be quickly removed from the machine.

In the. accompanying drawing: Figure 1 is a front view of my improved stropping machine, showing it closed, Fig. 2 a rear. View thereof, Fig. 3 a plan, Fig. 4 a rear view showing the machine opened, Fig. 5 a vertical section on line 5-5, Fig. 1, Fig. 6 a cross section, partly broken away, on line 6 6, Fig. 5, Fig. 7 a perspective view of one of the clamping plates, Fig. 8 a similar view'of the other clamping plate, Fig. 9 a longitudinal section through the handle and adjoining parts, and Fig. 10 a section', partly broken away, on line 10-10, Fig. 3.

The machine comprises essentially a .pair of parallel s'tropping rollers 15, 16 which are 4so spaced as to form an intervening gap 17. Roller 15 is provided with a pair of hubs 18 which loosely embrace a headed pin 19 secured by nut 2O to a first U-shaped frame member 21. 16 has a pair of hubs 22 loosely mounted upon a pin 23 which is secured by nut 24 to trame 21. One of the hubs 22 passes through the latter and carries at its tree Pin 23 and the cranlecarrying hub 22 constitute the tulcrum tor a second U-shaped 4frame member 26 provided with a handle 27.. Frame members 21, 26 are normally in substantial alinement, tor which purpose there is mounted within l meinber 26 amovable U-shaped bail 28 into which is tapped a screw 29 passing through a central perforation othandle 27. A. spring 30 interposed between member 26 and a pin 31A carried by screw 29 serves to normally retract bail 28. To the Shanks of the bail are secured outwardly projecting pins 32 pass ing through corresponding slots 33 ot frame .forming part of plate 3T.

In like manner, roller member 26 and adapted 'to engage a pair of hooks 34 formed on trame member 2l. These hooks when engaged by pins 32 serve to maintain frame members 21` 26 in their alined position (Figs. 1 and 2). It it is desired to yopen or break the frame for inserting or withdrawing' a razor blade as hereinafter more fully described. screw 29 is pressed inward to withdraw pins 32 from hooks so that frame member 26 may be freely swung on pin 23 into the position shown in Fig. 4.

Rollers 15, 16 are adaptedto be .simulcrank 25 for which purpose, rollers l5, 16 are provided with toothed wheels moshing into one another.

The means for-presenting the blade to be sharpened to the stropping rollers consist of a pair of clamping plates 36, 3T. Plate 36 is provided with eyes 3S which are pivotally mounted within arms 39 projecting up wardly from' frame member 26. Into eyes 38 is fitted a pin 40 upon which are loosely mounted a pair of corresponding eyes 41 At their lower ends, plates 36, 37 lare bent inwardly to form a pair of shouldered jaws 42, 43 between which the razor blade 44 to be stropped is inserted. Jaws 42, 43 are preferably so constructed that blades of the various makes of safety razors now in the market may be readily grasped thereby.' For holding a blade of the so-called Gillette safety razor, a flat spring 45 is riveted to plate 37, said spring being provided with a pair of studs 45*L which by passing through taneously rotated in opposite directions b vatcnted Mar. 1. i910.

corresponding apertures of jaw 43 are adapted to enter the usual perforations formed in such blades. Other makes of blades are ,provided 4with ribs extending along their rear edges, a blade of-this construction being shown in Fig. 6. The rib 46 oi such a blade rest-s upon the shoulders formed on 'jaws 42, 43. In order to force jaws 42, 43 against one another, a lever 47 is fnlcrumed at 48 to plate 36. It lever 47 is turned intb the position shown in Fig. 5, the heel 49 of said lever is'forced against a lug 50 projecting upwardly from plate 37. This lug is thereby swung awayl from plate 36, thus pressing jaw 43 toward jaw 42. For removing the blade, lever 47 is turned into the position shown by dotted lines in 5, and lug 50 is swung toward plate 36, an aperture icc 51 of said plate accommodating the lug. In

mit a ready removal of therazor blade.

Means are provided for oscillating holder "36, 37 so as 4to 'bring the blade to be sharp-.-

ened into alternating engagement with ro er's 15 and 16. For this purpose, .there firmly secured to the lower end of a resilient cam lever or arm 54'the upper end of which is connected at 55 to plate 36'( Cams 52 are so shaped that upon their rotation, they impart tov pin 53 an oscillating movement which 1n turn causes a corresponding oscillation of blade holder 436, 37 In this way the razor blade carried b'ysaid holder will be brought into alternate engagement with the stroppmg rollers.

If it isdesi'red to insert a razor blade into the machine, screw 29 is pushed inward to withdraw pins 32 from hooks 34 and permit-- Athe breaking of the frame so that the partsk assume the osit-ion shown in Fig. 4. Blade .holder v36, 3 may now be freely swung into.

lany. desired 'position to permit a convenient introduction of the blade.

ment, the pins 32 an hooks 34 preventing a subsequent accidental o ening of the frame. Crank 25 is-now rotate in the proper direction' to. cause a. corresponding rotation of stropping rollers 15,16 and a simultaneous oscillation of theblade holder and blade carried thereby. In this way the blade is alternately swung from onestropping roller `toward the other roller, so'that both sides of its cutting vedge are uniformly' sharpened.

v.means actuated by l The blade holderA is'then turned downward so that pin53 rests 'upon cam 52 whereupon the frame' members 21, 26 are again brought into aline- 30- z ors-and similar articles. j I clalmzv. .y l i 1. In a razor-stroppmg machine, a frame pair of intergearedstroppi-n rollers jour# naled in the .frameg-''a bla e holder and the rollers for oscillating said blade holder.

2. In a razor stropping machine, a framel vided for stropping the blades of safety raf ,comprising a first member and a second f y=I 1t1'e mber uIcrumed-.tothe first member,` a y secured to each gear wheel 35 a cam disk 52.-

Betweenl cams 52 is interposed a Iii-'11153'. 55.

comprising a pair of members fulcrumed to one another,ra hook formed. on one 'of said members, a movable in carried -by theother 4member and adapte to engage'said"hook,'a'

pair of stropping rollersv journaled in the `frame, a blade holder fhung in one o the frame members, and means actuated by the rollers for oscillating said blade holder. l

3. In a razor stro ping machine,- a frame comprising a pair o members fulcrumedto 'one another, means for interlocking said members, a. pairof intergeared stroppng rollers journaled in the frame, camscarried by the rollers, a'blade holder .inthe Vframe, anda resilient arm secure .to `the lblade holder and engaging the cams? t. In a razor stropp-ing. machine, a frame, a'blade holder hun in ysaid frame and comprisin a pair of-.pivoted vclamping plates, a-

lever ulcrumed to one of said plates, aheel formed on said lever and adapted to eni 80.

gage the other plate,andmeans for oscillating the blade holder.

5. vIn `a razor stroppmg machine, a frame having a pair ofv alined perforations, a first clamping plate having a; airy of=e es that engage the frame-perforations, a pi'n fitted ving a pair. of eyes that encompass the pin, and means for forcing the lower ends of the clamping plates against` one another.

Mos H. AVRAM.-

Witnesses i i ARTHUR E. ZMPE, W. R. SCHULZ.

. .into said eyes, a second clamping plate hav- 

